[Voyage-linux] Error connecting multiple PL2303 Serial Converter

[Michael Steinmann]

I have such cables, and they are fully supported by Linux.
AFAIK there is no multiple adapter chipset, see
http://www.silabs.com/products/interface/usbtouart/Pages/usb-to-uart-bridge.aspx
There are even (windows) tools to completely rename the PID/VID and set the
product string, see:
http://www.silabs.com/pages/DownloadDoc.aspx?FILEURL=Support%20Documents/Software/an144sw.zip&src=SoftwardDownloadsWebPart

I've produced PCBs with the CP2102 and I really can recommend them, let me
know if you want to go that road...

Best regards,
Michael Steinmann



2012/1/18 Pippo Pippo 77 <pippopippo77 at email.it>

> Hi Michael,
> and thanks for your help.
> I have a couple of question regarding cp210x adapter, and I would
> appreciate if you can help me.
>
> 1) Do voyage 0.5 with 2.6 Branck kernel have driver for this?
> 2) Do voyage 0.8 with 3.0 kernse have driver too?
> 3) Do you know if exist multiple adapter based on this chipset? For
> example 1 USB but 2/4 serial Port?
>
>
> Many Thanks
>
>
> 2012/1/18 Michael Steinmann <mike.steinmann at gmail.com>
>
>> Hi,
>>
>> I had bad experiences with Profilic based adaptors, they are a POS!
>> Get a silicon labs cp210x based adaptor, which I think are even better
>> than those from FTDI.
>>
>>
>> http://www.alibaba.com/product-gs/288753118/cp2102_usb_rs232_cable_VCC_GND.html
>>
>> http://connectingcables.en.alibaba.com/product/326571577-210803458/CP2102_FT232_PL2323_optional_RS232_to_USB_adapter_cable.html
>>
>> -Michael
>>
>>
>> 2012/1/18 Pippo Pippo 77 <pippopippo77 at email.it>
>>
>>> Hi,
>>> i need to connet 2 PL2303 serial converter in order to get 2 serial port.
>>> I tried this with voyage 0.8 and voyage 0.5, and behaviour is the same.
>>>
>>> When I connect the converters, i got some message in dmesg log, that
>>> told me that converters is attached to /dev/ttyUSB0 and /dev/ttyUSB1.
>>>
>>> If i use this converter one by one, it work without problem, but i need
>>> to use it together with 2 modem at same time.
>>> In this case, the second device I try to open with minicom, it would not
>>> connect and i got this message into dmesg log:
>>>
>>> *pl2303_open - failed submitting interrupt urb, error -28*
>>>
>>> I tried with Voyage 0.8 with new kernel but problem persist. Useing
>>> device one a time, works perfectly, but together not, the second i try to
>>> use i got this interrupt urb error.
>>> What can cause this? What can i try?
>>>
>>> Any help would be appreciated. Many Thanks in Advance.
>>>
>>> Marco
>>>
>>> _______________________________________________
>>> Voyage-linux mailing list
>>> Voyage-linux at list.voyage.hk
>>> http://list.voyage.hk/mailman/listinfo/voyage-linux
>>>
>>>
>>
>
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